6-Oxo-1, 6-dihydro-3, 4'-bipyridine-5-carbonitrile

6-Oxo-1-(beta-D-ribofuranosyl)nicotinic acid

6-Oxo-2, 2, 4, 4, 6-pentaphenoxycyclotri-lambda(5)-phosphazane-1, 3-diene

6-Oxo-3, 4, 4a, 5-tetrahydro-3-hydroxy-2, 2-dimethylnaphtho-1, 2-pyran

6-Oxo-3-methylhexyl acetate

6-Oxo-D-lysine

6-Oxo-ethinylestradiol

6-Oxo-ramelteon

6-Oxocannabidiol glucoside

6-Oxocholestan-3.beta.-ol acetate

6-Oxocytidine

6-Oxodecanoic acid

6-Oxodocetaxel

6-Oxoestradiol diacetate

6-Oxoheptanoic acid

6-Oxohexa-2, 4-dienoic acid

6-Oxolysine

6-Oxononanoic acid

6-Oxoprimapterin

6-Oxotridecanoic acid